have you done the prime burner and prime pump before trying to ignite? is it the first time?

nope flew day before last no problem!! this one has got me scratching my head. Do pumps just go out just like that?, upon start up it sounds like it wants too poping and then off and keeps spinning. ECU says "ignition Failure" i know that can mean a lot of things!!!

You can still get fuel pumps from the UK, but you might try giving Ron Ballard a try as he might still have some inventory.

Team Synergy, Team Scorpion, No good deed goes unpunished

How do you guys run the pump backwards i under stand it is with a D cell battery. I can hear the valves opening though. the glow gets hot, no go on the fuel pump from Ron, no big deal and I understand. What I don't understand is why we don't have a US service agent.. Jet cat has one? now this fuel pump is going to cost more.

I have 8hrs on this engine and this happens not very happy with Wren right now!!!

Don't worry its not just a Wren problem as I had to run my Jetcat pump backwards a few times when I first started using my heli engine. The wren lads might have a different opinion on this but I used to give mine a quick blip in reverse polarity on a 6 cell nicad pack. just make sure you have removed the pump out of the fuel system before hand. I had to do this about 3 times in the early days. Because the ECU is sending such a low voltage to the pump there isn't much torque to get the motor spinning if there is even a tiny particle in the gears.

just make sure its only a quick blip on the battery. I'm talking like a tenth of a second.

Mick

Did exactly what you said and it runs like a top had re-prime the lines no biggy!!!just a little bump a couple of time's and things are good..

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Next question does certain fuel oil mixture aggravate this problem I use BP 2380 and have no ill effects what so ever..the burner when I pulled after 8hrs looked very good. Also winter is coming and I have other interest so the helicopter is not going to get run much,storage for the turbine is there any suggestions or should I just plan on running it through the winter.

No I don't think the different types of oil would make a difference. It's more than likely bits out of your fuel drum. You may even have to do it again in the future until your pump wares in. From my experience it only ever happens at start up, I've never had a flame out once everything is up and running.

As for storage, I just let mine sit after the last use until I want to use it next time. I had my engine sitting here for a few years as I had to do a rebuild and I just put new batteries on and fired it up. Didn't even flush the old fuel out. I don't get the freezing winters here though, our lowest temp would be -1 Celsius at worst.

It's a Robbe Cuatro helicopter with a conversion frame from Jetcat originally. Then I bought another frame set from a company called turbine technics which is what it is now.

Mick.

Robbe & Futaba.

I also noticed a little fuel under the engine upon further review the fuel was coming out of the plug, the o-ring was deformed and damaged. This might have been the problem on the starts and the starter was just coincidence?

my question is also is there a o-ring on top and a o-ring on the bottom right ? made since right?